Sediment-pocket for boilers



M. HUFFMAN. SEDIMEN'T POCKET FOR BOLERS.

- APPLICATION FILED IAN.'I3, I 92o. 1,371,765. Patented Mar. 15,1921.

2 SHEETS-SHEET l.

a a n su o o o -e e a aqulvozaw o B r w@ 26 y Avro/meufs.

M. HUFFMAN. SEDINIENT POCKET FOR BOILERS. APPLICATION FILED JAN. 13| |920.

INVENTUR Patented Mar. 15, 192 1.

2 SHEETS-SHED 2.

was C! adjacent to thezrear end of the boiler;-

UNITED sTArEs vPATE SEDIMENT-POCKET FOR YBOILERS.

To all 'whom zi may concern:

Be it known that IM1`Kn.HUFFMAN,.a citizen of the United States, and a resident of Des Moines, in the county of Polk and State of Iowa, havefinvented a certain new and kuseful Sediment-Pocket for Boilers, of which the following is a specification.

The object of my invention is to provide a sedimentpocket for boilers ofsimple, durable and inexpensive construction.

A further object of my inventionA isy to providea sedimentpocket for steam boil-, ers adapted to receive the sediment there.- from, and prevent the formation of scale on the boiler shell at a point where the heaty from the firevbox comesfin contactwith the.'

shell,

A further object ofvmy invention is to a point below the fireA boxV or combustion*v chamber, whereby the` sediment may be deposited in a partofthe leg, which 1s not subject to the direct heat yof the fire.

provide such a water leg, having novel means for reinforcing the same, and pro-` vided with an inclined bottomv member, whereby the sediment droppingto the bottom of the boiler will be carried by gravityy down theinclined' end bottom of the leg -to a pre-determined point, wherea blow-outvv opening may be provided.

With these and other objects in view, my

rangement and combination of the various parts of the device` whereby theobjects contemplated are attained, as hereinafter more` fully set forth, pointed out in my claims.y and illustrated in the accompanying draw ings, in which: i

Figure lis anfend elevationof a boiler, having my improvedsediment .pocketinstalled therein, the-innerwall of the lire boxbeing removed tobetter` illustratel ther.

construction. l v

F 1g.'` 2 is avertical, sectionalfviewtaken` Fig. 3 is a verticalsectionalview taken on a similar line, and illustratingmamodiY` fied form of thefdevice; and

IFig. 4 lis 'a horizontal, central, sectional view of the device.

Referring to the accompanying drawings, I have used the reference numeral 10 to inboiler.

- Specicationfof Letters Patent. Patented M313 15 1921; ,Application[inea-January 13, 1920., serial No.y '351,1841" Y l l Nr Tormes. f

dicate generally the rear wallof the firey box, which has side-,walls 11,,extendingupwardly to support the boiler.,12, whichv is@V wardly from said openings, -whichiis lcon.A

structedas hereinafter described.X Y

Spaced side walls .16, arehel'd in :position Yspaced from each other by staybolts -17, and

have their upper edges bentl outwardly at 18 torform va flange, whereby the-walls-may be secured to the boiler-wall.

The lower edges ofthe walls'16 are in-.

clined downwardly and vrearwardly-r` from their front portions and are connected by al' similarly inclined bottomy ,member 19whiich has up-turned flangesf20 at 'either lside( edge',AA

adapted to be'boltedor riveted .to thezlower edges of the walls 516. A- l A further object of-my invention is to Y,

Vbythe flange Amay be secured rvto the bottom-1 .wall of the boiler, and a -water-tight'connectionformed betweenfthe:v leggiV and the rlhe rear end ofthe ,water leg is closed byk means of' a wall 22having inturned flanges 23 thereon, which may ybe. bolted .or

riveted tothe rear edges vof-thexwallsl.' invention consists 1n the` construction, ar- Y The upper-edge' ofthe wall-22. may be turned in at 24,60 forma bolted flange,

whereby a water-tight-- connection may ,be-

of the water leg is anoutlet or blow-outpipev-Lv 25, which vis extended through the-plate19 and formsa'water-tight connectionl'therewith. The. pipe v25 .is connecteduto an elbow wardlyltof a-'va'lve 28; l

which is connected with, a sewernS() or any q other suitable means .for Vcarrying away the water from'the valve 29. y

The valve 28 is disposed infa: trench 29 Y n Win benoemt-that thermen rear. ena

of the s water Vleg yextends Vto /fpos'itiont below the' ground level, and consequently to A,posie` tion away from direct contact with the of the combustion chamber.

In the practical operationV of my imheat iin

Y 26'ufrom which a nipple 2T extendsrearI is, will eventually bake the `sediment to the boiler wall, as theheat applied to the wall can not be conducted away rapidly enough by the sediment. y y

When this oocurs,`z it is extremely difficult to clean the boiler. `ll/Ioi'eover,`if it is continued long enough, the boiler will burn out and an explosion will ensue. Where my im proved sediment pocket is employed,how ever', the sediment will settle down toward the bottom of the boiler, and then down into the waterleg.

In bothformsof `my improve-d water leg,

the bottom'thereof is inclined downwardly and rearwardly, *whereby the sediment will by gravity follow theinclination of the bottomdown to the portion vof the `leg below the ground level.

As the boiler is under pressure, it will be seen that when this lower partofthe water leg is filled, then if the valve 28 is opened, the pressure of the boiler will blow the sediment adjacent tothe open end of the pipe 25 out throughl thatpipe through the elbow 26 and pipe 27 into the trench 29, where it may be carried away by the sewer 30.

Where the form of device illustrated in Fig. 3 is used, the settling of the sediment to the bottom of the water leg instead of on the bottom of the boilershell is furthered by the inclined side plates or walls 16.

Fromthe foregoingdescription, it will be seen that it would be practicallyimpossible to burn out the bottom-wall of the boiler Vshell where my `improved sediment pocket is used, until the water leg had been filled tofposition near the top up with sediment thereof. Y

Furthermore, the sediment is all collected in one pocket, having an inclined bottom with an opening adjacent to the small end of the pocket, whereby a minimum amount of the boiler pressure and energy is required to blow a maximum amount of sediment out of the boiler.

1 Further the comparatively short distance between the walls 16 and the inclined bottom of the water leg'makes theentire shape of the waterleg,` such that the maximum amount of heat is derived from the combustheir scope.

tion chamber and eiiiciency of the heating of the boiler is enhanced by the use of my improved sediment pocket rather than diminished.` Y l `Some changesmay be made in the construction and arrangement of the parts of my improved device without departing from the essential features and purposes of my invention, and it is my intention to cover by my claims any modified forms of structure or use of mechanical equivalents, which may be reasonably `included within I claim as my invention: Y 1. In a boiler furnace, thev combination with a boiler and suitable furnace walls, of a sediment pocket iixed to the under sideof the boiler and extended downwardly and rearwardly beneath the boiler,`with its bottom Varranged at such a steep incline that sediment within the sediment pocket will move by gravity downwardly and rear* wardly, the said boiler being provided with for the passage of sediment from the boiler into the sediment pocket, the lower rear portion of the sediment pocket being extended downwardly inside offthe furnace walls to a point where the heat from the 'furnace `suitable openings in its bottom to provide will not substantially affect it, and the rear the rear wall of the furnace far enough to permit the fcirculationof the products of b oiler, and a blow-ofi valve at the lower portion of the sediment pocket, for the purnoses'stated. i Y

of the sediment pocket being spaced from combustion beyond the rear ofthe sediment pocket, where ity may return through the 2. The combination with a cylindrical boiler', of. asediment pocket attached thereto, said boiler being provided at its bottom with transversely arranged slotted openings through which sediment may be discharged, the boiler portions between the slots being so arranged as to provide braces for the boiler against internal pressures,

and said sediment pocket comprising two side sheets and a bottom portion, said side sheets having their upperV edges riveted to the boiler along its sides and I above the slots, said bottom being inclined downf f wardly and rearwardly at such an angle as to cause sediment in the boiler `to flow by gravity to the rear lower end ofthe sediment pocket, and blow-off valve at the bottom of the sediment pocket, and aseries of boltsI passed through the sides of the sediment pocket to brace said sediment pocket against internal pressures, for the pur poses stated. f Des Moines, lowa, December 29, 1919.` r MIKE HUFFMAN. 

